Home / 3,845.75-5,756.70-2,086.39

Finding the Fourth Proportional to 3,845.75, 5,756.70 and 2,086.39

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Solution

The fourth proportional to 3,845.75, 5,756.70 and 2,086.39 is: 3,123.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,845.75 : 5,756.70 = 2,086.39 : x
  2. Step 2: Convert to fraction form
    3,845.75/5,756.70 = 2,086.39/x
  3. Step 3: Cross multiply
    3,845.75x = 5,756.70 × 2,086.39
  4. Step 4: Simplify right side
    3,845.75x = 12,010,736.33
  5. Step 5: Solve for x
    x = 12,010,736.33/3,845.75
  6. Step 6: Final answer
    x = 3,123.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.